Force transmitting mechanism for glue gun

摘要

A mechanism is described which employs a safety element for preventing the application of excessive force to a linkage. ln several embodiments the safety device comprises a spring which allows relative movement between a trigger and the linkage. The safety device may, however, be a mechanical fuse.;The inventive safety device is embodied in a hot glue gun so that the'safety device prevents the application of excessive force to the linkage which advances glue. Damage to the glue gun is thus avoided.;Also disclosed is a unique return spring for a mechanism such as the glue gripper of a glue gun. The return spring allows rotation of the gripping element to occur before linear movement of the glue stick.